I'm afraid it might be like some of the other medical issues: there's more money in research and unsuccessful "treatments" than in -disclosing- I mean "discovering" the cure. Plus, if they -disclose- "discover" the cure, they won't get to go all these free -vacations- conferences.
Unless we change ourselves and thereby humankind, by 2030 you would have a first wave of unhealthy drugs for managing symptoms that they're supposed to take for the rest of your life. It is folly to look at tinnitus as a hole that needs a key. It might be more like a field of grain that has nutritional problems for various reasons. The simplest approach is always to stop causing the problem. That might then also make already existing cases resolve, at least over time.
How much are societal markers being examined? Like with cancer: How much could the high-tech industrialized world be a contributing factor to tinnitus occurence? Which societies don't have this problem or to a much lesser degree? And even if it is more psychological, like chronic micro muscle tension or such, what other societies have different psychological stressors? Never build an echo chamber in which only the problem exists. To attain health, one has to look onto the problem from outside of it.
